The pea plant (Pisum sativum) was grown in an ebb & flow hydroponics system until it failed; now it's in a deep water culture unit.
I noticed that the leaves were turning brown/grey. I thought this may be a disease so I sprayed Daconcil when needed, but it didn't seem to help. Thinking it might be fertilizer burn, I flushed the system, but now I noticed the leaves are drying up. To rule out the possibility of burning from too much light, I moved the light 2 inches back sideways. However, it's still progressing.
Why is this happening? Here are some details on the setup and environment.
- Pea Little marvel (Pisum sativum)
- pH as of now: 6.5 - 6.2 pH
- Light is 100w 6500K (daylight) fluorescent.
- Light period controlled by timer.
- Light period was changed from 14 hrs to 16 hrs after light was moved.
- next to air vent. (always cold)
- Fertilizer is miracle-gro 20-10-10.
- water has hydrogen peroxide in it to keep it oxygenated.
- hydrogen peroxide ratio: 1/4 cup of peroxide per quart of water.
- Air pump keeps water bubbling/moving to keep it oxygenated (no air stone, just a diy nozzle).